Hyperlane — Fuel Integration

Audit report published Mar 2025. Fuel · Sway.

Findings at a glance

Severity	Count
Low	3
Total	3

Summary

Safe Edges reviewed Hyperlane's Fuel integration, the Sway contracts that bring Hyperlane's cross- chain messaging to the Fuel network. The review ran from 1 to 10 March 2025 using manual analysis, functional testing and automated testing. Three Low severity issues were identified and no Critical, High or Medium issues were found. The Hyperlane team addressed all three, and the fixes were confirmed in a review of the updated code on 10 March 2025.

Read the full report (PDF).

Findings

Low (3)

• L-01 CEI Pattern Violation in claim Function — Resolved
• L-02 Deprecated Use of ZERO_B256 — Resolved
• L-03 Incorrect Handling of msg_amount() in Mailbox::dispatch — Resolved

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